Leonard



(ModeL) L. G. POGG.

FEATHERING PADDL'E WHEELE.

No. 279,558. Patented June 19,1888.

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UNITED STATES PATENT OFFICE.

LEONARD O. FOGG, OF KENNEBUNKPOR-T, MAINE, ASSIGNOR OF ONE-THIRD TO WM. H. H. HINDS, OF SAME PLACE.

FEATHERING PADDLE-WHEEL.

SPECIFICATION forming part of Letters Patent No. 279,558, dated June 19, 1883.

Application filed February 2|, 181 .3. lModel.)

To aZZ whom it may concern.-

Be it known that 'I, LEONARD O. FOGG, of

Kennebunkport, in the county of York and State of Maine, have invented a new and Im- 5 proved Self Adjusting Paddle for Paddle- VVheels for Propelling Boats, of which the following is a specification.

The nature of my invention consists in substituting a self-adjusting paddle in two parts for a paddle with a plain surface in one part, as is now generally used, for the reason that a paddle with a plain surface in one part allows the water to easily glance from it, thus losing a large percentage of the power applied.

' The object of my invention is to utilize the greatest possible percentage of the power applied.

My improvement consists in a paddle made in two parts, which two parts may have either 20 a plain or a concave surface.

In the drawings, Figure 1 is a perspective View of the arms of a paddle-wheel with a paddle or float of my invention attached. Fig. 2 is a similar view of a modified form of 2 same. Fig. 3 is a side "iew of paddle-wheel, showing position of paddles or floats with re lation to the water. 20 represents the water line.

In Fig. 1,- b b represent the arms of a pad- 0 dle-wheel. These armsareconnectedbyaconcave plate, a, extending from one to the other at a little distance from the end of the arms. A concave plate, 0, is pivoted between the arms I) 1) between the plate a and the ends of 3 5 the arms. This plate 0 is free to turn on. its

' pivots d d,- but one side of the plate 0 projects a greater distance than the other side from the pivots. This eccentricity of the pi vots will cause the side of the plate having 0 greatest weight to stand out from the center of the wheel when the latter is in revolution by reason of centrifugal force. The concave plate 0 may be of sheet metal and be riveted to the ends which carry the pivots. The pivoted plates should be so set-in the arms b I) as to be 45 readily removable. In Fig. 2 the revolx'ing plate is shown to be flat instead of being concave, as in Fig. 1, and the connecting-plate, which unites the arms I) b, is also flat. ltis apparent that considerable 5c changemaybe made inthe form of these plates without departing from thespirit of myinvention. The operation of my device is as follows: The wheel being in rotation, the centrifugal 51 force will carry the heaviest end of the plates 0 to the outside of the circle. As the buckets enter the water, the plates 0 will be, by the pressure of the water, carried into the position shown in Figs. 1 and 2, forming with 6( plates a a trough or bucket with a considerable surface bearing against the water. As the arms lift from-the water the direction of the water-pressure changes, and plates C swing away from plates (1, leaving a passage for the 6 water between, so that little or no water is lifted, and the full power of the wheel is used for propulsion.

Vhat I claim isl. The combination, with the arms of apad- 71 dle-wheel, of fixed cross-pieces which form a part of the paddle or bucket, and movable cross-pieces pivoted between the arms of the wheel, so as to swing toward the fixed crosspieces and complete the paddles, o1", swing away 7 and leave a passage for the water between said pieces, substantially as described.

2; The combination, with the arms of a paddle-wheel, of concave pieces rigidly secured between said arms, and concave plates pivoted 8 between said arms, so as to swing against or away from the fixed concave pieces, substantially as shown.

LEONARD O. FOGG. 

